chore: initialize backlog with deployment task and known bug

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

backlog/config.yml

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+project_name: "rcal-online"
+default_status: "To Do"
+statuses: ["To Do", "In Progress", "Done"]
+labels: []
+milestones: []
+date_format: yyyy-mm-dd
+max_column_width: 20
+default_editor: "nvim"
+auto_open_browser: true
+default_port: 6420
+remote_operations: true
+auto_commit: false
+bypass_git_hooks: false
+check_active_branches: true
+active_branch_days: 30
+task_prefix: "task"

backlog/tasks/task-1 - Deploy-rcal-online-to-production.md

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+---
+id: TASK-1
+title: Deploy rcal-online to production
+status: Done
+assignee: []
+created_date: '2026-02-15 16:16'
+updated_date: '2026-02-15 16:16'
+labels: []
+dependencies: []
+priority: high
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+Fork zoomcal-jeffemmett, strip IFC, add lunar overlay, 4-tab layout (Temporal/Spatial/Lunar/Context), r* tool adapter registry, Prisma+PostgreSQL backend API, Docker deployment to Netcup
+<!-- SECTION:DESCRIPTION:END -->
+
+## Implementation Notes
+
+<!-- SECTION:NOTES:BEGIN -->
+Completed 2026-02-15:
+- Phase 0: Forked zoomcal, inlined @cal/shared, swapped deps
+- Phase 1: 4-tab layout, Zustand store refactored, IFC stripped from all components
+- Phase 2: Lunar engine (lunarphase-js + suncalc), MoonPhaseIcon, LunarOverlay, LunarTab
+- Phase 3: r* tool adapter registry, RCalProvider, ContextTab, URL-driven context route, embeddable export
+- Phase 4: Prisma schema (Event, CalendarSource, Location), 7 API routes, PostgreSQL backend
+- Phase 5: Docker multi-stage build, security hardened, deployed to rcal.jeffemmett.com
+- Gitea repo + GitHub mirror (sync-on-commit), deploy webhook configured
+- Known issue: synodic month duration calc needs fix (finds nearest new moon vs full cycle)
+<!-- SECTION:NOTES:END -->

backlog/tasks/task-2 - Fix-synodic-month-duration-calculation-in-lunar-engine.md

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+---
+id: TASK-2
+title: Fix synodic month duration calculation in lunar engine
+status: To Do
+assignee: []
+created_date: '2026-02-15 16:16'
+labels: []
+dependencies: []
+priority: medium
+---
+
+## Description
+
+<!-- SECTION:DESCRIPTION:BEGIN -->
+getSynodicMonth() in src/lib/lunar.ts finds the nearest new moon instead of computing the full ~29.53 day synodic cycle. findPreviousNewMoon/findNextNewMoon need to search across the full cycle boundary, not just find the local illumination minimum.
+<!-- SECTION:DESCRIPTION:END -->